ZHAO Wenling.Analysis of Degradation Characteristic and Its Effect Factors of New Biodegradable PLA Sand Barrier[J].Research of Soil and Water Conservation,2015,22(06):198-202.
新型生物可降解PLA沙袋沙障降解特性及其影响因子探究
- Title:
- Analysis of Degradation Characteristic and Its Effect Factors of New Biodegradable PLA Sand Barrier
- Keywords:
- biodegradable sand barrier; poly lactic acid fiber; effect factors; degradable characteristic
- 分类号:
- S775
- 摘要:
- 为了延长新型生物可降解聚乳酸（PLA）纤维材料在防沙治沙中的使用寿命，通过对野外铺设5 a的PLA沙袋沙障材料采样测试，结合室内控制温度、湿度单因子试验分析了PLA沙袋沙障的降解特性及影响因子。结果表明：高温高湿条件能够促使PLA沙障材料在短时间内降解。在沙区迎风坡中部的PLA纤维机械性能损失最大；沙障暴露面PLA纤维的机械性能损失率比贴地面大，相差可达12.29%，沙障障体迎风面机械性能损失率最大。夏季雨后高温及频繁剧烈地风沙活动是影响PLA沙障材料降解的主要因子。
- Abstract:
- To delay the use time of new biodegradable poly lactic acid fiber in desertification control process, we investigated and determined the PLA sand barrier materials laied on the bare sand dune for 5 years and combined the laboratory experiments of single-factor controlling temperature and soil moisture to analyze degradation characteristic and its effect factors of PLA sand barrier. The results showed that high temperature and high humdity could accelerate degradation process of PLA sand barrier materials. Mechanical performance loss of PLA fiber was the largest in mesoslope of upwind and windward side. The mechanical permormance loss of sand barrier materials exposing to air was larger 12.29% than that of sand barrier materials facing the ground. The high temperature occurred after rain in summer and fluent and intensive blown-sand activities were the main factors leading to PLA sand barrier material degradation.
参考文献/References:
[1] 回良玉在治理荒漠化国际会议开幕式上强调[N].人民日报,2008-01-23(2).
[2] SFA(State Forestry Administration, P. R. China). A bulletin of status quo of desertification and sandification in China[EB/OL]. http://www.forestry.gov.cn.2011.
[3] 王永芳,包慧娟,海春兴,等.防护林对科尔沁沙地耕地土壤理化性质的影响[J].干旱区研究,2012,29(6):1009-1013.
[4] 王晓峰.荒漠绿洲过渡带灌丛(草)沙堆土壤养分特征研究:以新疆和田河流域为例[D].乌鲁木齐:新疆师范大学,2008.
[5] 吴波,苏志珠,陈仲新.中国荒漠化潜在发生范围的修订[J].中国沙漠,2007,27(6):911-917.
[6] 崔向慧,卢琦.中国荒漠化防治标准化发展现状与展望[J].干旱区研究,2012,29(5):913-919.
[7] 马瑞,刘虎俊,马彦军,等.沙源供给条件对机械沙障固沙作用的影响[J].水土保持学报,2013,27(5):104-108.
[8] 张克存,屈建军,姚正毅,等.青藏铁路格拉段风沙危害及其防治[J].干旱区地理,2014,37(1):74-80.
[9] 屈建军,凌裕泉,俎瑞平,等.半隐蔽格状沙障的综合防护效益观测研究[J].中国沙漠,2005,25(3):329-335.
[10] 党晓宏,虞毅,高永,等. PLA沙障对沙丘土壤粒径的影响分析[J].水土保持研究,2014.21(3):16-19,24
[11] 周丹丹.生物可降解聚乳酸(PLA)材料在防沙治沙中的应用研究[D].呼和浩特:内蒙古农业大学,2009.
[12] 周丹丹,虞毅,胡生荣,等.沙袋沙障凹曲面特性研究[J].水土保持通报,2009,29(4):22-25.
[13] 袁立敏,高永,虞毅,等. PLA沙障对土壤硬度的影响[J].中国水土保持科学,2010,8(4):90-94.
[14] 韩春冬,高君亮,虞毅,等.PLA沙障对毛乌素沙地新月形沙丘土壤水分的影响[J].内蒙古林业科技,2010,36(4):1-4.
[15] 党晓宏,高永,虞毅,等.新型生物可降解PLA沙障与传统草方格沙障防风效益[J].北京林业大学学报,2015,37(3):118-125.
[16] 阿荣.吉兰泰地区立地条件类型划分[J].内蒙古林业调查设计,1997(4):151-153.
备注/Memo
收稿日期:2015-05-23;改回日期:2015-06-23。
基金项目:内蒙古自治区自然科学资助项目“高大密集流动沙丘上营建植被与沙丘活动的互馈机制（2014ZD03）”
作者简介:赵文玲(1963-),女,内蒙古呼和浩特人,馆员,主要从事高校档案管理工作。E-mail:15947017419@163.com